package com.thread.lesson.state;

import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * @Author: Mr.Xi
 * @Description:
 * @Date: Create in 14:52 2021/7/2
 * @Modified By:
 */
//模拟倒计时
public class TestSleep2 {
    public static void main(String[] args) {
        /**
         * 打印当前系统时间
         */
        Date startTime = new Date(System.currentTimeMillis());//获取系统当前时间
        while(true){
            try {
                Thread.sleep(1000);
                System.out.println(new SimpleDateFormat("HH:mm:ss").format(startTime));
                startTime = new Date(System.currentTimeMillis());//更新当前时间
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }

        /**
         * 倒计时
         */
//        try {
//            tenDown();
//        } catch (InterruptedException e) {
//            e.printStackTrace();
//        }
    }


    public static void tenDown() throws InterruptedException {
        int num = 10;

        while(true){
            Thread.sleep(1000);
            System.out.println(num--);
            if (num <= 0){
                break;
            }
        }
    }
}
